• Ex-National Security Adviser Michael Flynn and Counselor to the President Kellyanne Conway take their seats before the start of a joint news conference with President Donald Trump and Canadian Prime Minister Justin Trudeau in the East Room of the White House in Washington, Monday, Feb. 13, 2017. Photo: Pablo Martinez Monsivais, AP / Copyright 2017 The Associated Press. All rights reserved.
Photo: Pablo Martinez Monsivais, AP
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Ex-National Security Adviser Michael Flynn and Counselor to the President Kellyanne Conway take their seats before the start of a joint news conference with President Donald Trump and Canadian Prime Minister Justin Trudeau in the East Room of the White House in Washington, Monday, Feb. 13, 2017. less
Ex-National Security Adviser Michael Flynn and Counselor to the President Kellyanne Conway take their seats before the start of a joint news conference with President Donald Trump and Canadian Prime Minister ... more
Photo: Pablo Martinez Monsivais, AP

WASHINGTON (AP) — National security adviser Michael Flynn has resigned .